Hybrid hotair heater

Details Hybrid hotair heater Hybrid hotair heater

2005-06-14

2005-06-14

Jeffery, John A. (Department: 3742)

Electric resistance heating devices

Heating devices

Combined with nonelectric heating means

C392S365000

Reexamination Certificate

active

06907192

ABSTRACT:
If both the electric heaters and combustion heaters constitute a hybrid type hot-air heater wherein both heaters are equipped with inlets adjacent to each other and are also housed within a frame and separated such that the air blowing systems of each heater are independent of each other, air leakage will occur in only the combustion heater during the heating operation in a direction opposite to the air blowing passage of the electric heater thereby resulting in dust adhering to the electric heater. If the electric heater is operated in this state, the dust will be heated and then burn causing a foul odor to occur when the heating operation first starts. Therefore, the air blowing fan43runs to remove any dust that entered into the air blowing passage before the electric heater4runs when the electric heater unit4, equipped with an electric heater44, is performing a heating operation.

REFERENCES:
patent: 1429130 (1922-09-01), Dutton
patent: 2060079 (1936-11-01), Hood
patent: 5937139 (1999-08-01), Peterson
patent: 6795643 (2004-09-01), Ito et al.
patent: 272471 (1969-07-01), None
patent: 55-63348 (1980-05-01), None
patent: 58-184431 (1983-10-01), None
patent: 1-314505 (1989-12-01), None

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